macknup, The seller lists that it plays AMV video so it is an ACTIONS chipset player the same as most Nano Clones so it will have a hacked memory chip as these chipset players can only support a maximum of 2GB Nand Flash memory.
I suggets you not pay for it and tell the seller UGOOLE that since bidding on the auction you have found that he is on a Blacklist for selling 4GB players that actually have smaller memory chips hacked to read as 4GB and you have decided not to risk being scammed.
Send him these links as well
http://www.mympxplayer.org/i-figured...ghlight=ugoole
http://www.mympxplayer.org/next-vt13...oole&&start=60
http://www.mympxplayer.org/next-vt83...oole&&start=90
Tell him you have also passed this information on to Ebay.